Why so hot? It's only 2.8 million miles from its star, compared with the Earth's average 93 million-mile distance from the sun. The tight orbit means HD 189733b circles its star once every 2.2 Earth days.

As if its weather isn't wild enough, scientists believe it rains liquid glass over HD 189733b, contributing to its blue hue.

HD 189733b was discovered in 2005. Its blue color was discerned after the research team, using the Hubble Space Telescope, observed the planet before and after it passed behind its star. By subtracting the star's light from the combined light of the planet and star, the researchers' determined that the planet's reflected light likely falls into the blue part of the spectrum, USA Today reported.

It's the first time scientists have been able to determine the color of a planet outside our solar system, according to Space.com. There are 723 confirmed exoplanets listed so far and another 3,160 unconfirmed exoplanet candidates, the exoplanets.org website says.

Three exoplanets are positioned in their stars' "Goldilocks zone," the distance "just right" to let the planets have liquid surface water -- a key element of life on Earth. Their discovery was announced in April by scientists using Kepler, another NASA space telescope, Geekosystem.com reported.

Do you think there is life on other planets? And do you think there's a better name for this one? Please leave your comments below.